Can someone check my answers? Unit 2 Lesson 1 transformations and similarity introduction quick check.
1. Point C on the triangle has the coordinates (4,6). If it is reflected across the y-axis, what would the new coordinates be for the reflected point C'?
A. (-4,6)**
B. (6,-4)
C. (-6,4)
D. (4,-6)
2. Find the surface area of a cylinder with a radius of 6 inches and a height of 14 inches. Use the approximation 3.14 for pi.
A. 753.6 in²**
B. 565.2 in²
C. 226.08 in²
D. 527.52 in²
3. If a triangle has a 25° angle and a 45° angle, what is the third angle measure?
A. 20°
B. 70°
C. 110°**
D. 290°
4. Use the product rule of exponents to simplify the expression 6^4 · 6^-2.
A. 6^-6
B. 6^6
C. 6^2**
D. 6^-8
5. Which of the following is rational?
A. 78.345**
B. 4.82415461....
C. π
D. √8
1. Correct! The new coordinates for the reflected point C' would be (-4,6).
2. Correct! The surface area of the cylinder would be 753.6 in².
3. Correct! The third angle measure would be 110°.
4. Correct! Simplified expression is 6^2.
5. Correct! 78.345 is a rational number.